<template>
    <div>
        <!-- 面包屑导航 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
      </el-breadcrumb>
      <!-- 卡片视图区域 -->
      <el-card>
       <div id="main" style="width: 750px;height: 400px;"></div>
      </el-card>
    </div>
</template>
<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
   data(){
       return {
         //需要合并的数据
         option: {
            title: {
                text: 'ECharts 入门示例'
            },
            tooltip: {},
            legend: {
                data:['销量']
            },
            xAxis: {
                data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
            },
            yAxis: {},
            series: [{
                name: '销量',
                type: 'bar',
                data: [5, 20, 36, 10, 10, 20]
            }]
        }
       }
   },
   created(){

   },
   //此时页面上的元素已经被渲染完毕了
  async mounted(){
    // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));
        const {data: res} = await this.$http.get('reports/type/1')
        if(res.meta.status !== 200){
            return this.$message.error('获取折线图数据失败')
        } 
        //合并查询结果和data数据中的options
       const result =  _.merge(res.data,this.options)
        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(result);

   },
   methods: {

   }
}
</script>
<style lang="less" scoped>

</style>